Add support for a grid layout

[lneves12]

It would be nice to have the output of each process being shown inside a grid layout.

I have been playing around with concurrently and implemented something very simple:

lneves12@054cbd3

Demo:

Just wondering if this is something you would like to have in this library. If yes, I can clean up that code and add it under a: "--grid" option.

What do you think? Any suggestion?

[milahu]

node-ncurses? holy cow ^^ but maybe a browser-based interface would be prettier?

- goldenlayout.js as window manager (also used on https://godbolt.org/ for example)
- scroll back each process
- select text per process
- store command outputs in files

[gustavohenke]

What would the output look like when there are many commands + a small terminal window?